Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d4e8b10281e0bf50780c96b14ea40c7d80c1986894856c5dcab0e2deb90175e' 
  AND token = 'oAb/R6g8Ve+txRfU7KxJllAKs1W7l9xlVo5BrmsiY+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}